Cheating by boyfriend

My boyfriend with me in relationship about 10years in the first 4years of relationship I got pregnant.,got known by both of the families, after lot more discussion they forced us to get abortion (bcz that time their sister marriage is committed this issue make his sister marriage effect) so bcz of that girl life I agreed for abortion., Went to doctor I'm about 6months of pregnancy so abortion was not possible doctor denied their family people forced doctor to abort it, finally doctor decided to kill the baby inside my stomach then after done the normal delivery. Died baby girl came out. After this situation I called that boy and asked about marriage after so many discussion he agreed to marry, but denied to get marry immediately reason is his family was looking for dowry like that he said so he told to wait until we get settle I agreed and came out from house he only taken care of myself about 4 years., These all years we have a sexual relationship. Every year he will promise to marry and force me to get job and give some dowry I agreed for all now last month also he forced me to do sex in the phone. Now I'm asking to marry telling like I can't marry. Recently I got job so I have 1 lakh rupees of amount he asked to return what he spent so I returned 1lakh 2lakhs is left to return bcz I lived in hostels so he was the person taking care of rent and allowances. I approached their family members about his denying on marriage.they are telling few months back he was telling that u both are going to get we don't know what happened in between you. So if he doesn't like why you are forcing him. Leave him and get marry someone we will promise he won't disturb like that, but they are not ready to do marriage with him. The person also denied, but were in relationship about 10years I done sex with him on his promise about marriage now telling like I marry another girl and be with you forever and he doesn't marry me. Sometimes tell like I have debt issues so I can't, in these 3 days he totally blocked me on Facebook, watsapp,